Invoke another available skill in the current turn.

<conditions> - A SKILL document instructs you to chain into another skill on completion (e.g. ralplan → ultragoal) - You finished one skill's workflow and the next step requires another skill's full prompt context </conditions> <instruction> - `name` is the skill name as it appears in `/skill:<name>` (e.g. `ralplan`, `ultragoal`, `autoresearch`, `deep-interview`) - `args` is the free-form argument string the skill would receive after `/skill:<name>` on the command line - The tool loads the callee's SKILL.md into the current turn and handles native workflow caller→callee state handoff when the caller is one of the built-in GJC workflows. - The chain is refused while a native workflow caller is still mid-flight. `autoresearch` chains from any of its phases (`intake`/`research`/`verdict`) — a research mission is always handoff-ready. `deep-interview` chains once its final spec is persisted (phase `handoff`), and `ralplan` chains from `final` or `handoff`. Only a mid-flight `ralplan` or `ultragoal` needs preparation first: `gjc state <skill> write --input '{"current_phase":"handoff"}' --json`; no other handoff command is needed. Runtime project/user skills do not use `gjc state <skill>`. - Call once per chain step. To chain `A → B → C`, A calls `skill(B)`; B's next agent turn calls `skill(C)`. </instruction> <critical> - Do NOT use this tool to "remind yourself" of a skill you're already running. The current SKILL.md is already in your context. - Do NOT chain into the same skill recursively. If a skill's flow needs another iteration, follow its in-document instructions. - `name` MUST be one concrete skill name, NOT a glob or wildcard. Passing `*`, `?`, or a pattern like `git-*` is rejected immediately — the `--skills '*'` launch filter is unrelated to this tool's `name`. - The chained skill's planning/execution-boundary rules still apply. Chaining does not grant execution approval. </critical> <examples> # Hand off from ralplan to ultragoal after an approved plan {"name": "ultragoal", "args": "track execution of .gjc/plans/ralplan/<run-id>/pending-approval.md"}

Trigger deep-interview with no arguments

{"name": "deep-interview"} </examples>